NPFC - RR-C-271
CHAINS AND ATTACHMENTS, WELDED AND WELDLESS
|Publication Date:||23 December 2010|
This specification covers welded and weldless chain of commercial quality together with sundry attachments most commonly used with this chain.
Type I, chain, welded steel. Type I is steel chain intended for general service. Type I, class 1, is a special analysis alloy steel recommended for hazardous overhead lifting and wherever... View More
Type I, chain, welded steel. Type I is steel chain intended for general service. Type I, class 1, is a special analysis alloy steel recommended for hazardous overhead lifting and wherever long life and extremely high tensile strengths are desired. Type I, class 2, is a special analysis steel treated as required to produce a chain having high tensile strength and resistance to impact loads.
Type II, chain, weldless. Type II, class 11, mechanical communication chain is intended for use in pulleys used on a line of signal transmission of mechanical telegraphs, i.e. ship's bridge to engine room communication.
Type IV, shackles. Shackles, with the exception of class 1 round pin and cotter, are intended for general use including rigging.
Type XV, end links. End links in accordance with this specification are intended for use with fueling at sea rigging.View Less